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Python の型ヒントで JSON の型チェックをする / Validation for J...
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mitsuse
December 10, 2018
Programming
6.9k
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Python の型ヒントで JSON の型チェックをする / Validation for JSON with Type hints in Python
mitsuse
December 10, 2018
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Transcript
Python ͷܕώϯτͰ JSON ͷܕνΣοΫΛ͢Δ mitsuse_t LINE Developer Meetup 47
͓·͑ɺ୭Αʁ 1
͓·͑ɺ୭Αʁ 1
͓·͑ɺ୭Αʁ 1 ɾը૾ͱ͔ࣗવݴޠͱ͔ɺ1ZUIPOͱ͔ɺ ͋Δ͍J04ͱ͔4XJGUͱ͔ͦͷลΓ Λ͝ʹΐ͝ʹΐ ࠷͍ۙͬͯΔ͜ͱ
͓·͑ɺ୭Αʁ 1 ɾը૾ͱ͔ࣗવݴޠͱ͔ɺ1ZUIPOͱ͔ɺ ͋Δ͍J04ͱ͔4XJGUͱ͔ͦͷลΓ Λ͝ʹΐ͝ʹΐ ɾೣͱΒ͍ͯ͠·͢ ɾΧϨʔͱΠεΩʔ͕͖ ɾΠΧͱλίͷήʔϜΛΑ͍ͬͯ͘ ·͢ ࠷͍ۙͬͯΔ͜ͱ
ଐੑͬΆ͍ͭ
1ZUIPOͷܕώϯτΛ ࣮ߦ࣌ʹࢀরͯ͠༡ͿΛ͠·͢
1ZUIPOͷܕώϯτΛ ࣮ߦ࣌ʹࢀরͯ͠༡ͿΛ͠·͢ 2
1ZUIPOͷܕώϯτΛ ࣮ߦ࣌ʹࢀরͯ͠༡ͿΛ͠·͢ 2 ɾΞϊςʔγϣϯͷγϯλοΫεಋೖ͔Βܕώϯτ·Ͱͷ
1ZUIPOͷܕώϯτΛ ࣮ߦ࣌ʹࢀরͯ͠༡ͿΛ͠·͢ 2 ɾΞϊςʔγϣϯͷγϯλοΫεಋೖ͔Βܕώϯτ·Ͱͷ ɾ੩తܕݕࠪπʔϧͰ͋ΔNZQZͷ
1ZUIPOͷܕώϯτΛ ࣮ߦ࣌ʹࢀরͯ͠༡ͿΛ͠·͢ 2 ɾΞϊςʔγϣϯͷγϯλοΫεಋೖ͔Βܕώϯτ·Ͱͷ ɾ੩తܕݕࠪπʔϧͰ͋ΔNZQZͷ ɾܕώϯτΛ࣮ߦ࣌ʹࢀরͯ͠+40/ͷܕΛνΣοΫ͢Δ
ؔ࿈͢Δ1&1NZQZͷ
1&1'VODUJPO"OOPUBUJPOT 3
1&1'VODUJPO"OOPUBUJPOT 3 ɾؔ ͷҾΓ ʹର͠ɺҙͷϝλσʔλΛΞϊςʔτ͢Δ ͨΊͷγϯλοΫεΛಋೖ
1&1'VODUJPO"OOPUBUJPOT 3 ɾؔ ͷҾΓ ʹର͠ɺҙͷϝλσʔλΛΞϊςʔτ͢Δ ͨΊͷγϯλοΫεΛಋೖ ɾ͜Ε·Ͱ༷ʑͳํ๏ͰΞϊςʔγϣϯ͕ࢪ͞Ε͍͕ͯͨɺͦΕΛ౷Ұ ͢ΔͨΊͷ1&1
1&1'VODUJPO"OOPUBUJPOT 3 ɾؔ ͷҾΓ ʹର͠ɺҙͷϝλσʔλΛΞϊςʔτ͢Δ ͨΊͷγϯλοΫεΛಋೖ ɾΞϊςʔγϣϯʹҙͷ͕ࣜ͑Δ ༻్ݶఆͤͣɾ༷ʑͳ༻్ ɾ͜Ε·Ͱ༷ʑͳํ๏ͰΞϊςʔγϣϯ͕ࢪ͞Ε͍͕ͯͨɺͦΕΛ౷Ұ ͢ΔͨΊͷ1&1
1&1'VODUJPO"OOPUBUJPOT 3 ɾؔ ͷҾΓ ʹର͠ɺҙͷϝλσʔλΛΞϊςʔτ͢Δ ͨΊͷγϯλοΫεΛಋೖ ɾΞϊςʔγϣϯʹҙͷ͕ࣜ͑Δ ༻్ݶఆͤͣɾ༷ʑͳ༻్ ɾ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@͔ΒΞϊςʔγϣϯ͕औಘͰ͖Δ ɾ͜Ε·Ͱ༷ʑͳํ๏ͰΞϊςʔγϣϯ͕ࢪ͞Ε͍͕ͯͨɺͦΕΛ౷Ұ
͢ΔͨΊͷ1&1
1&1'VODUJPO"OOPUBUJPOT 4
1&1'VODUJPO"OOPUBUJPOT ҙͷࣜͰྑ͍ͷͰจࣈྻͰՄ 4
1&1'VODUJPO"OOPUBUJPOT ҙͷࣜͰྑ͍ͷͰจࣈྻͰՄ @@BOOPUBUJPOT@@ͰΞϊςʔγϣϯΛࢀরͰ͖Δ 4
1&15ZQF)JOUT 5
1&15ZQF)JOUT ɾ1&1Ͱಋೖ͞ΕͨΞϊςʔγϣϯΛɺܕใͷ༩ͷͨΊʹ ༻͢Δ 5
1&15ZQF)JOUT ɾ1&1Ͱಋೖ͞ΕͨΞϊςʔγϣϯΛɺܕใͷ༩ͷͨΊʹ ༻͢Δ ɾܕΛ༩͢ΔͨΊͷඪ४ϞδϡʔϧUZQJOHͷఏڙɺ֤छఆٛͷඪ ४Խ 5
1&15ZQF)JOUT ɾ1&1Ͱಋೖ͞ΕͨΞϊςʔγϣϯΛɺܕใͷ༩ͷͨΊʹ ༻͢Δ ɾܕΛ༩͢ΔͨΊͷඪ४ϞδϡʔϧUZQJOHͷఏڙɺ֤छఆٛͷඪ ४Խ ɾ੩తܕݕࠪπʔϧͰ͋ΔNZQZ͔Βڧ͘ӨڹΛड͚͍ͯΔ 5
1&15ZQF)JOUT 6
1&15ZQF)JOUT UZQJOHʹ0QUJPOBM4FRVFODFͳͲΞϊςʔγϣϯ༻ͷܕ͕͋Δ 6
1&15ZQF)JOUT UZQJOHʹ0QUJPOBM4FRVFODFͳͲΞϊςʔγϣϯ༻ͷܕ͕͋Δ ܕͰΞϊςʔγϣϯ͢Δ 6
1&15ZQF)JOUT UZQJOHʹ0QUJPOBM4FRVFODFͳͲΞϊςʔγϣϯ༻ͷܕ͕͋Δ ܕͰΞϊςʔγϣϯ͢Δ @@BOOPUBUJPOT@@ͰΞϊςʔγϣϯΛࢀরͰ͖Δ 6
ܕώϯτΛॻ͚ܕνΣοΫ͞ΕΔʁ
ॻ͍͚ͨͩͰɺνΣοΫ͞Εͳ͍ʂ
1&15ZQF)JOUT 7
1&15ZQF)JOUT JOUͷΛ͍ͯ͠Δ 7
1&15ZQF)JOUT JOUͷΛ͍ͯ͠Δ Τϥʔͳ࣮͘ߦ͞ΕΔ 7
1&15ZQF)JOUT JOUͷΛ͍ͯ͠Δ Τϥʔͳ࣮͘ߦ͞ΕΔ ͋͘·ͰΞϊςʔγϣϯ͢ΔͨΊͷಓ۩ͱͦͷղऍ͕Ͳ͏͋Δ͖ ͔ɺΛఏڙ͢Δ ࣮ࡍʹѻ͏ͷ֎෦ͷπʔϧ 7
NZQZ 8
NZQZ 8 ɾ1ZUIPOͷ੩తܕݕࠪπʔϧ
NZQZ ɾ1&1ʹઌߦͯ͠ఏڙ͞Ε͍ͯͨπʔϧ͕ͩɺ1&1४ڌ ɾ1ZUIPOͷ੩తܕݕࠪπʔϧ 8
NZQZܕώϯτͱΈ߹Θͤͯ͏ ɾ1&1ʹઌߦͯ͠ఏڙ͞Ε͍ͯͨπʔϧ͕ͩɺ1&1४ڌ ɾνΣοΫ͢Δ͚ͩ ݪଇ࣮ߦ࣌ʹӨڹΛ༩͑ͳ͍ɺτϥϯεύΠϧ ͢ΔΘ͚Ͱͳ͍ ɾ1ZUIPOͷ੩తܕݕࠪπʔϧ 8
NZQZܕώϯτͱΈ߹Θͤͯ͏ 8
NZQZܕώϯτͱΈ߹Θͤͯ͏ JOUͷΛ͍ͯ͠Δ 8
NZQZܕώϯτͱΈ߹Θͤͯ͏ JOUͷΛ͍ͯ͠Δ *OUͱ0QUJPOBM<TUS>ޓੑ͕ͳ͍ 8
NZQZܕώϯτͱΈ߹Θͤͯ͏ JOUͷΛ͍ͯ͠Δ *OUͱ0QUJPOBM<TUS>ޓੑ͕ͳ͍ ܕ͕Ұக͠ͳ͍߹ɺNZQZ͕Τϥʔͱͯ͠ݕग़ͯ͘͠ΕΔ 8
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͍ͨ͠
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͍ͨ͠ 9
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͍ͨ͠ ੩తܕݕ͕ࠪ͋Δͷʹͪ·ͪ·+40/ͷܕνΣοΫΛͨ͘͠ͳ͍ 9
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͍ͨ͠ ɾ΄΅"OZͳΛɺΑ͘ܕ͚͞ΕͨΦϒδΣΫτʹม͍ͨ͠ ੩తܕݕ͕ࠪ͋Δͷʹͪ·ͪ·+40/ͷܕνΣοΫΛͨ͘͠ͳ͍ 9
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͍ͨ͠ ɾ΄΅"OZͳΛɺΑ͘ܕ͚͞ΕͨΦϒδΣΫτʹม͍ͨ͠ ɾมͯ͠͠·͑ɺޙNZQZͷ੩తܕνΣοΫʹͷͤΒΕΔ ੩తܕݕ͕ࠪ͋Δͷʹͪ·ͪ·+40/ͷܕνΣοΫΛͨ͘͠ͳ͍ 9
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͍ͨ͠ ɾ΄΅"OZͳΛɺΑ͘ܕ͚͞ΕͨΦϒδΣΫτʹม͍ͨ͠ ɾมͯ͠͠·͑ɺޙNZQZͷ੩తܕνΣοΫʹͷͤΒΕΔ ੩తܕݕ͕ࠪ͋Δͷʹͪ·ͪ·+40/ͷܕνΣοΫΛͨ͘͠ͳ͍ ܕώϯτΛ͢ΔલఏͳΒͦͷใΛͬͯνΣοΫͰ͖ͳ͍͔ 9
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͍ͨ͠ ɾܕใ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@ͰऔಘͰ͖Δ ɾ΄΅"OZͳΛɺΑ͘ܕ͚͞ΕͨΦϒδΣΫτʹม͍ͨ͠ ɾมͯ͠͠·͑ɺޙNZQZͷ੩తܕνΣοΫʹͷͤΒΕΔ ੩తܕݕ͕ࠪ͋Δͷʹͪ·ͪ·+40/ͷܕνΣοΫΛͨ͘͠ͳ͍ ܕώϯτΛ͢ΔલఏͳΒͦͷใΛͬͯνΣοΫͰ͖ͳ͍͔ 9
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͍ͨ͠ ɾܕใ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@ͰऔಘͰ͖Δ ɾ΄΅"OZͳΛɺΑ͘ܕ͚͞ΕͨΦϒδΣΫτʹม͍ͨ͠ ɾͳΜ͔Ͱ͖ͦ͏ͳͷͰࢼͯ͠Έͨ ɾมͯ͠͠·͑ɺޙNZQZͷ੩తܕνΣοΫʹͷͤΒΕΔ ੩తܕݕ͕ࠪ͋Δͷʹͪ·ͪ·+40/ͷܕνΣοΫΛͨ͘͠ͳ͍ ܕώϯτΛ͢ΔલఏͳΒͦͷใΛͬͯνΣοΫͰ͖ͳ͍͔ https://github.com/mitsuse/typedjson-python 9
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͢Δ 10
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͢Δ 10
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͢Δ 0QUJPOBM 6OJPO ѻ͑Δ 10
ܕώϯτΛͬͯ ࣮ߦ࣌ʹ+40/ͷܕνΣοΫΛ͢Δ 0QUJPOBM 6OJPO ѻ͑Δ ඞਢͷϓϩύςΟʹର͢Δ/POFΤϥʔ 10
Ͳ͏ͬͯಈ͍͍ͯΔͷ͔ʁ 11
Ͳ͏ͬͯಈ͍͍ͯΔͷ͔ʁ ۪ʹ@@BOOPUBUJPOT@@Λల։ͯ͠ܕνΣοΫ͍ͯ͘͠ 11
Ͳ͏ͬͯಈ͍͍ͯΔͷ͔ʁ ۪ʹ@@BOOPUBUJPOT@@Λల։ͯ͠ܕνΣοΫ͍ͯ͘͠ ɾܕใ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@ͰऔಘͰ͖Δ 11
Ͳ͏ͬͯಈ͍͍ͯΔͷ͔ʁ ۪ʹ@@BOOPUBUJPOT@@Λల։ͯ͠ܕνΣοΫ͍ͯ͘͠ ɾܕใ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@ͰऔಘͰ͖Δ ɾܕύϥϝʔλʔΛ࣋ͭܕ 6OJPO5VQMFͳͲ ʜ 11
Ͳ͏ͬͯಈ͍͍ͯΔͷ͔ʁ ۪ʹ@@BOOPUBUJPOT@@Λల։ͯ͠ܕνΣοΫ͍ͯ͘͠ ɾܕใ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@ͰऔಘͰ͖Δ ɾܕύϥϝʔλʔΛ࣋ͭܕ 6OJPO5VQMFͳͲ ʜ ɾ@@PSJHJO@@Ͱ͍ΘΏΔSBXUZQF͕औಘͰ͖Δ ɾ@@BSHT@@Ͱܕύϥϝʔλʔʹ͞Εͨܕ͕औಘͰ͖Δ 11
Ͳ͏ͬͯಈ͍͍ͯΔͷ͔ʁ 11 ۪ʹ@@BOOPUBUJPOT@@Λల։ͯ͠ܕνΣοΫ͍ͯ͘͠ ɾܕใ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@ͰऔಘͰ͖Δ ɾܕύϥϝʔλʔΛ࣋ͭܕ 6OJPO5VQMFͳͲ ʜ ɾ@@PSJHJO@@Ͱ͍ΘΏΔSBXUZQF͕औಘͰ͖Δ ɾ@@BSHT@@Ͱܕύϥϝʔλʔʹ͞Εͨܕ͕औಘͰ͖Δ EBUBDMBTTͷมJOJU5SVF͕ݱঢ়લఏ
Ͳ͏ͬͯಈ͍͍ͯΔͷ͔ʁ ۪ʹ@@BOOPUBUJPOT@@Λల։ͯ͠ܕνΣοΫ͍ͯ͘͠ ɾܕใ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@ͰऔಘͰ͖Δ ɾܕύϥϝʔλʔΛ࣋ͭܕ 6OJPO5VQMFͳͲ ʜ ɾ@@PSJHJO@@Ͱ͍ΘΏΔSBXUZQF͕औಘͰ͖Δ ɾ@@BSHT@@Ͱܕύϥϝʔλʔʹ͞Εͨܕ͕औಘͰ͖Δ EBUBDMBTTͷมJOJU5SVF͕ݱঢ়લఏ ɾϑΟʔϧυͷܕώϯτ͔ΒετϨʔτʹEBUBDMBTTͷΛੜ͢Δ
ͨΊ 11
Ͳ͏ͬͯಈ͍͍ͯΔͷ͔ʁ ۪ʹ@@BOOPUBUJPOT@@Λల։ͯ͠ܕνΣοΫ͍ͯ͘͠ ɾܕใ࣮ߦ࣌ʹ@@BOOPUBUJPOT@@ͰऔಘͰ͖Δ ɾܕύϥϝʔλʔΛ࣋ͭܕ 6OJPO5VQMFͳͲ ʜ ɾ@@PSJHJO@@Ͱ͍ΘΏΔSBXUZQF͕औಘͰ͖Δ ɾ@@BSHT@@Ͱܕύϥϝʔλʔʹ͞Εͨܕ͕औಘͰ͖Δ EBUBDMBTTͷมJOJU5SVF͕ݱঢ়લఏ ɾϑΟʔϧυͷܕώϯτ͔ΒετϨʔτʹEBUBDMBTTͷΛੜ͢Δ
ͨΊ ྆ऀͱVOEPDVNFOUFE ࠓޙΔ"1*Ͱ͋ΔͱݴΘΕ͍ͯΔ͕ʜ 11
·ͱΊ
·ͱΊ Ξϊςʔγϣϯͱܕώϯτ ɾ1ZUIPOຊମʹύϥϝʔλʔʹର͢ΔΞϊςʔγϣϯΛ༩͢Δγϯ λοΫε͕Ճ͞Ε͍ͯΔ ࣮ߦ࣌ʹܕใΛࢀরͯ͠Կ͕Ͱ͖Δ͔ ɾΞϊςʔγϣϯͷҰͭͷ༻్ͱͯ͠ܕώϯτ͕͋Δ ɾEBUBDMBTTͷܕఆٛΛ༻ͨ͠+40/ͷܕνΣοΫΛ࣮ͯ͠Έͨ ɾΞϊςʔγϣϯɾܕώϯτͷใ࣮ߦ࣌ʹࢀরͰ͖Δ ɾ੍ݶɾVOEPDVNFOUFEͳ"1*ͷ͋Δ͕ಈ͘ʹಈ͘